/*      $NetBSD: vi.c,v 1.8 2000/09/04 22:06:33 lukem Exp $     */

/*-
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Christos Zoulas of Cornell University.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "compat.h"
#if !defined(lint) && !defined(SCCSID)
#if 0
static char sccsid[] = "@(#)vi.c        8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: vi.c,v 1.8 2000/09/04 22:06:33 lukem Exp $");
#endif
#endif /* not lint && not SCCSID */

/*
 * vi.c: Vi mode commands.
 */
#include "sys.h"
#include "el.h"

private el_action_t     cv_action(EditLine *, int);
private el_action_t     cv_paste(EditLine *, int);

/* cv_action():
 *      Handle vi actions.
 */
private el_action_t
cv_action(EditLine *el, int c)
{
        char *cp, *kp;

        if (el->el_chared.c_vcmd.action & DELETE) {
                el->el_chared.c_vcmd.action = NO_OP;
                el->el_chared.c_vcmd.pos = 0;

                el->el_chared.c_undo.isize = 0;
                el->el_chared.c_undo.dsize = 0;
                kp = el->el_chared.c_undo.buf;
                for (cp = el->el_line.buffer; cp < el->el_line.lastchar; cp++) {
                        *kp++ = *cp;
                        el->el_chared.c_undo.dsize++;
                }

                el->el_chared.c_undo.action = INSERT;
                el->el_chared.c_undo.ptr = el->el_line.buffer;
                el->el_line.lastchar = el->el_line.buffer;
                el->el_line.cursor = el->el_line.buffer;
                if (c & INSERT)
                        el->el_map.current = el->el_map.key;

                return (CC_REFRESH);
        }
        el->el_chared.c_vcmd.pos = el->el_line.cursor;
        el->el_chared.c_vcmd.action = c;
        return (CC_ARGHACK);

#ifdef notdef
        /*
         * I don't think that this is needed. But we keep it for now
         */
        else
        if (el_chared.c_vcmd.action == NO_OP) {
                el->el_chared.c_vcmd.pos = el->el_line.cursor;
                el->el_chared.c_vcmd.action = c;
                return (CC_ARGHACK);
        } else {
                el->el_chared.c_vcmd.action = 0;
                el->el_chared.c_vcmd.pos = 0;
                return (CC_ERROR);
        }
#endif
}


/* cv_paste():
 *      Paste previous deletion before or after the cursor
 */
private el_action_t
cv_paste(EditLine *el, int c)
{
        char *ptr;
        c_undo_t *un = &el->el_chared.c_undo;

#ifdef DEBUG_PASTE
        (void) fprintf(el->el_errfile, "Paste: %x \"%s\" +%d -%d\n",
            un->action, un->buf, un->isize, un->dsize);
#endif
        if (un->isize == 0)
                return (CC_ERROR);

        if (!c && el->el_line.cursor < el->el_line.lastchar)
                el->el_line.cursor++;
        ptr = el->el_line.cursor;

        c_insert(el, (int) un->isize);
        if (el->el_line.cursor + un->isize > el->el_line.lastchar)
                return (CC_ERROR);
        (void) memcpy(ptr, un->buf, un->isize);
        return (CC_REFRESH);
}


/* vi_paste_next():
 *      Vi paste previous deletion to the right of the cursor
 *      [p]
 */
protected el_action_t
/*ARGSUSED*/
vi_paste_next(EditLine *el, int c)
{

        return (cv_paste(el, 0));
}


/* vi_paste_prev():
 *      Vi paste previous deletion to the left of the cursor
 *      [P]
 */
protected el_action_t
/*ARGSUSED*/
vi_paste_prev(EditLine *el, int c)
{

        return (cv_paste(el, 1));
}


/* vi_prev_space_word():
 *      Vi move to the previous space delimited word
 *      [B]
 */
protected el_action_t
/*ARGSUSED*/
vi_prev_space_word(EditLine *el, int c)
{

        if (el->el_line.cursor == el->el_line.buffer)
                return (CC_ERROR);

        el->el_line.cursor = cv_prev_word(el, el->el_line.cursor,
            el->el_line.buffer,
            el->el_state.argument,
            cv__isword);

        if (el->el_chared.c_vcmd.action & DELETE) {
                cv_delfini(el);
                return (CC_REFRESH);
        }
        return (CC_CURSOR);
}


/* vi_prev_word():
 *      Vi move to the previous word
 *      [B]
 */
protected el_action_t
/*ARGSUSED*/
vi_prev_word(EditLine *el, int c)
{

        if (el->el_line.cursor == el->el_line.buffer)
                return (CC_ERROR);

        el->el_line.cursor = cv_prev_word(el, el->el_line.cursor,
            el->el_line.buffer,
            el->el_state.argument,
            ce__isword);

        if (el->el_chared.c_vcmd.action & DELETE) {
                cv_delfini(el);
                return (CC_REFRESH);
        }
        return (CC_CURSOR);
}


/* vi_next_space_word():
 *      Vi move to the next space delimited word
 *      [W]
 */
protected el_action_t
/*ARGSUSED*/
vi_next_space_word(EditLine *el, int c)
{

        if (el->el_line.cursor == el->el_line.lastchar)
                return (CC_ERROR);

        el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
            el->el_line.lastchar,
            el->el_state.argument,
            cv__isword);

        if (el->el_map.type == MAP_VI)
                if (el->el_chared.c_vcmd.action & DELETE) {
                        cv_delfini(el);
                        return (CC_REFRESH);
                }
        return (CC_CURSOR);
}


/* vi_next_word():
 *      Vi move to the next word
 *      [w]
 */
protected el_action_t
/*ARGSUSED*/
vi_next_word(EditLine *el, int c)
{

        if (el->el_line.cursor == el->el_line.lastchar)
                return (CC_ERROR);

        el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
            el->el_line.lastchar,
            el->el_state.argument,
            ce__isword);

        if (el->el_map.type == MAP_VI)
                if (el->el_chared.c_vcmd.action & DELETE) {
                        cv_delfini(el);
                        return (CC_REFRESH);
                }
        return (CC_CURSOR);
}


/* vi_change_case():
 *      Vi change case of character under the cursor and advance one character
 *      [~]
 */
protected el_action_t
vi_change_case(EditLine *el, int c)
{

        if (el->el_line.cursor < el->el_line.lastchar) {
                c = *el->el_line.cursor;
                if (isupper(c))
                        *el->el_line.cursor++ = tolower(c);
                else if (islower(c))
                        *el->el_line.cursor++ = toupper(c);
                else
                        el->el_line.cursor++;
                re_fastaddc(el);
                return (CC_NORM);
        }
        return (CC_ERROR);
}


/* vi_change_meta():
 *      Vi change prefix command
 *      [c]
 */
protected el_action_t
/*ARGSUSED*/
vi_change_meta(EditLine *el, int c)
{

        /*
         * Delete with insert == change: first we delete and then we leave in
         * insert mode.
         */
        return (cv_action(el, DELETE | INSERT));
}


/* vi_insert_at_bol():
 *      Vi enter insert mode at the beginning of line
 *      [I]
 */
protected el_action_t
/*ARGSUSED*/
vi_insert_at_bol(EditLine *el, int c)
{

        el->el_line.cursor = el->el_line.buffer;
        el->el_chared.c_vcmd.ins = el->el_line.cursor;

        el->el_chared.c_undo.ptr = el->el_line.cursor;
        el->el_chared.c_undo.action = DELETE;

        el->el_map.current = el->el_map.key;
        return (CC_CURSOR);
}


/* vi_replace_char():
 *      Vi replace character under the cursor with the next character typed
 *      [r]
 */
protected el_action_t
/*ARGSUSED*/
vi_replace_char(EditLine *el, int c)
{

        el->el_map.current = el->el_map.key;
        el->el_state.inputmode = MODE_REPLACE_1;
        el->el_chared.c_undo.action = CHANGE;
        el->el_chared.c_undo.ptr = el->el_line.cursor;
        el->el_chared.c_undo.isize = 0;
        el->el_chared.c_undo.dsize = 0;
        return (CC_NORM);
}


/* vi_replace_mode():
 *      Vi enter replace mode
 *      [R]
 */
protected el_action_t
/*ARGSUSED*/
vi_replace_mode(EditLine *el, int c)
{

        el->el_map.current = el->el_map.key;
        el->el_state.inputmode = MODE_REPLACE;
        el->el_chared.c_undo.action = CHANGE;
        el->el_chared.c_undo.ptr = el->el_line.cursor;
        el->el_chared.c_undo.isize = 0;
        el->el_chared.c_undo.dsize = 0;
        return (CC_NORM);
}


/* vi_substitute_char():
 *      Vi replace character under the cursor and enter insert mode
 *      [r]
 */
protected el_action_t
/*ARGSUSED*/
vi_substitute_char(EditLine *el, int c)
{

        c_delafter(el, el->el_state.argument);
        el->el_map.current = el->el_map.key;
        return (CC_REFRESH);
}


/* vi_substitute_line():
 *      Vi substitute entire line
 *      [S]
 */
protected el_action_t
/*ARGSUSED*/
vi_substitute_line(EditLine *el, int c)
{

        (void) em_kill_line(el, 0);
        el->el_map.current = el->el_map.key;
        return (CC_REFRESH);
}


/* vi_change_to_eol():
 *      Vi change to end of line
 *      [C]
 */
protected el_action_t
/*ARGSUSED*/
vi_change_to_eol(EditLine *el, int c)
{

        (void) ed_kill_line(el, 0);
        el->el_map.current = el->el_map.key;
        return (CC_REFRESH);
}


/* vi_insert():
 *      Vi enter insert mode
 *      [i]
 */
protected el_action_t
/*ARGSUSED*/
vi_insert(EditLine *el, int c)
{

        el->el_map.current = el->el_map.key;

        el->el_chared.c_vcmd.ins = el->el_line.cursor;
        el->el_chared.c_undo.ptr = el->el_line.cursor;
        el->el_chared.c_undo.action = DELETE;

        return (CC_NORM);
}


/* vi_add():
 *      Vi enter insert mode after the cursor
 *      [a]
 */
protected el_action_t
/*ARGSUSED*/
vi_add(EditLine *el, int c)
{
        int ret;

        el->el_map.current = el->el_map.key;
        if (el->el_line.cursor < el->el_line.lastchar) {
                el->el_line.cursor++;
                if (el->el_line.cursor > el->el_line.lastchar)
                        el->el_line.cursor = el->el_line.lastchar;
                ret = CC_CURSOR;
        } else
                ret = CC_NORM;

        el->el_chared.c_vcmd.ins = el->el_line.cursor;
        el->el_chared.c_undo.ptr = el->el_line.cursor;
        el->el_chared.c_undo.action = DELETE;

        return (ret);
}


/* vi_add_at_eol():
 *      Vi enter insert mode at end of line
 *      [A]
 */
protected el_action_t
/*ARGSUSED*/
vi_add_at_eol(EditLine *el, int c)
{

        el->el_map.current = el->el_map.key;
        el->el_line.cursor = el->el_line.lastchar;

        /* Mark where insertion begins */
        el->el_chared.c_vcmd.ins = el->el_line.lastchar;
        el->el_chared.c_undo.ptr = el->el_line.lastchar;
        el->el_chared.c_undo.action = DELETE;
        return (CC_CURSOR);
}


/* vi_delete_meta():
 *      Vi delete prefix command
 *      [d]
 */
protected el_action_t
/*ARGSUSED*/
vi_delete_meta(EditLine *el, int c)
{

        return (cv_action(el, DELETE));
}


/* vi_end_word():
 *      Vi move to the end of the current space delimited word
 *      [E]
 */
protected el_action_t
/*ARGSUSED*/
vi_end_word(EditLine *el, int c)
{

        if (el->el_line.cursor == el->el_line.lastchar)
                return (CC_ERROR);

        el->el_line.cursor = cv__endword(el->el_line.cursor,
            el->el_line.lastchar, el->el_state.argument);

        if (el->el_chared.c_vcmd.action & DELETE) {
                el->el_line.cursor++;
                cv_delfini(el);
                return (CC_REFRESH);
        }
        return (CC_CURSOR);
}


/* vi_to_end_word():
 *      Vi move to the end of the current word
 *      [e]
 */
protected el_action_t
/*ARGSUSED*/
vi_to_end_word(EditLine *el, int c)
{

        if (el->el_line.cursor == el->el_line.lastchar)
                return (CC_ERROR);

        el->el_line.cursor = cv__endword(el->el_line.cursor,
            el->el_line.lastchar, el->el_state.argument);

        if (el->el_chared.c_vcmd.action & DELETE) {
                el->el_line.cursor++;
                cv_delfini(el);
                return (CC_REFRESH);
        }
        return (CC_CURSOR);
}


/* vi_undo():
 *      Vi undo last change
 *      [u]
 */
protected el_action_t
/*ARGSUSED*/
vi_undo(EditLine *el, int c)
{
        char *cp, *kp;
        char temp;
        int i, size;
        c_undo_t *un = &el->el_chared.c_undo;

#ifdef DEBUG_UNDO
        (void) fprintf(el->el_errfile, "Undo: %x \"%s\" +%d -%d\n",
            un->action, un->buf, un->isize, un->dsize);
#endif
        switch (un->action) {
        case DELETE:
                if (un->dsize == 0)
                        return (CC_NORM);

                (void) memcpy(un->buf, un->ptr, un->dsize);
                for (cp = un->ptr; cp <= el->el_line.lastchar; cp++)
                        *cp = cp[un->dsize];

                el->el_line.lastchar -= un->dsize;
                el->el_line.cursor = un->ptr;

                un->action = INSERT;
                un->isize = un->dsize;
                un->dsize = 0;
                break;

        case DELETE | INSERT:
                size = un->isize - un->dsize;
                if (size > 0)
                        i = un->dsize;
                else
                        i = un->isize;
                cp = un->ptr;
                kp = un->buf;
                while (i-- > 0) {
                        temp = *kp;
                        *kp++ = *cp;
                        *cp++ = temp;
                }
                if (size > 0) {
                        el->el_line.cursor = cp;
                        c_insert(el, size);
                        while (size-- > 0 && cp < el->el_line.lastchar) {
                                temp = *kp;
                                *kp++ = *cp;
                                *cp++ = temp;
                        }
                } else if (size < 0) {
                        size = -size;
                        for (; cp <= el->el_line.lastchar; cp++) {
                                *kp++ = *cp;
                                *cp = cp[size];
                        }
                        el->el_line.lastchar -= size;
                }
                el->el_line.cursor = un->ptr;
                i = un->dsize;
                un->dsize = un->isize;
                un->isize = i;
                break;

        case INSERT:
                if (un->isize == 0)
                        return (CC_NORM);

                el->el_line.cursor = un->ptr;
                c_insert(el, (int) un->isize);
                (void) memcpy(un->ptr, un->buf, un->isize);
                un->action = DELETE;
                un->dsize = un->isize;
                un->isize = 0;
                break;

        case CHANGE:
                if (un->isize == 0)
                        return (CC_NORM);

                el->el_line.cursor = un->ptr;
                size = (int) (el->el_line.cursor - el->el_line.lastchar);
                if (size < un->isize)
                        size = un->isize;
                cp = un->ptr;
                kp = un->buf;
                for (i = 0; i < size; i++) {
                        temp = *kp;
                        *kp++ = *cp;
                        *cp++ = temp;
                }
                un->dsize = 0;
                break;

        default:
                return (CC_ERROR);
        }

        return (CC_REFRESH);
}


/* vi_command_mode():
 *      Vi enter command mode (use alternative key bindings)
 *      [<ESC>]
 */
protected el_action_t
/*ARGSUSED*/
vi_command_mode(EditLine *el, int c)
{
        int size;

        /* [Esc] cancels pending action */
        el->el_chared.c_vcmd.ins = 0;
        el->el_chared.c_vcmd.action = NO_OP;
        el->el_chared.c_vcmd.pos = 0;

        el->el_state.doingarg = 0;
        size = el->el_chared.c_undo.ptr - el->el_line.cursor;
        if (size < 0)
                size = -size;
        if (el->el_chared.c_undo.action == (INSERT | DELETE) ||
            el->el_chared.c_undo.action == DELETE)
                el->el_chared.c_undo.dsize = size;
        else
                el->el_chared.c_undo.isize = size;

        el->el_state.inputmode = MODE_INSERT;
        el->el_map.current = el->el_map.alt;
#ifdef VI_MOVE
        if (el->el_line.cursor > el->el_line.buffer)
                el->el_line.cursor--;
#endif
        return (CC_CURSOR);
}


/* vi_zero():
 *      Vi move to the beginning of line
 *      [0]
 */
protected el_action_t
vi_zero(EditLine *el, int c)
{

        if (el->el_state.doingarg) {
                if (el->el_state.argument > 1000000)
                        return (CC_ERROR);
                el->el_state.argument =
                    (el->el_state.argument * 10) + (c - '0');
                return (CC_ARGHACK);
        } else {
                el->el_line.cursor = el->el_line.buffer;
                if (el->el_chared.c_vcmd.action & DELETE) {
                        cv_delfini(el);
                        return (CC_REFRESH);
                }
                return (CC_CURSOR);
        }
}


/* vi_delete_prev_char():
 *      Vi move to previous character (backspace)
 *      [^H]
 */
protected el_action_t
/*ARGSUSED*/
vi_delete_prev_char(EditLine *el, int c)
{

        if (el->el_chared.c_vcmd.ins == 0)
                return (CC_ERROR);

        if (el->el_chared.c_vcmd.ins >
            el->el_line.cursor - el->el_state.argument)
                return (CC_ERROR);

        c_delbefore(el, el->el_state.argument);
        el->el_line.cursor -= el->el_state.argument;

        return (CC_REFRESH);
}


/* vi_list_or_eof():
 *      Vi list choices for completion or indicate end of file if empty line
 *      [^D]
 */
protected el_action_t
/*ARGSUSED*/
vi_list_or_eof(EditLine *el, int c)
{

#ifdef notyet
        if (el->el_line.cursor == el->el_line.lastchar &&
            el->el_line.cursor == el->el_line.buffer) {
#endif
                term_overwrite(el, STReof, 4);  /* then do a EOF */
                term__flush();
                return (CC_EOF);
#ifdef notyet
        } else {
                re_goto_bottom(el);
                *el->el_line.lastchar = '\0';   /* just in case */
                return (CC_LIST_CHOICES);
        }
#endif
}


/* vi_kill_line_prev():
 *      Vi cut from beginning of line to cursor
 *      [^U]
 */
protected el_action_t
/*ARGSUSED*/
vi_kill_line_prev(EditLine *el, int c)
{
        char *kp, *cp;

        cp = el->el_line.buffer;
        kp = el->el_chared.c_kill.buf;
        while (cp < el->el_line.cursor)
                *kp++ = *cp++;  /* copy it */
        el->el_chared.c_kill.last = kp;
        c_delbefore(el, el->el_line.cursor - el->el_line.buffer);
        el->el_line.cursor = el->el_line.buffer;        /* zap! */
        return (CC_REFRESH);
}


/* vi_search_prev():
 *      Vi search history previous
 *      [?]
 */
protected el_action_t
/*ARGSUSED*/
vi_search_prev(EditLine *el, int c)
{

        return (cv_search(el, ED_SEARCH_PREV_HISTORY));
}


/* vi_search_next():
 *      Vi search history next
 *      [/]
 */
protected el_action_t
/*ARGSUSED*/
vi_search_next(EditLine *el, int c)
{

        return (cv_search(el, ED_SEARCH_NEXT_HISTORY));
}


/* vi_repeat_search_next():
 *      Vi repeat current search in the same search direction
 *      [n]
 */
protected el_action_t
/*ARGSUSED*/
vi_repeat_search_next(EditLine *el, int c)
{

        if (el->el_search.patlen == 0)
                return (CC_ERROR);
        else
                return (cv_repeat_srch(el, el->el_search.patdir));
}


/* vi_repeat_search_prev():
 *      Vi repeat current search in the opposite search direction
 *      [N]
 */
/*ARGSUSED*/
protected el_action_t
vi_repeat_search_prev(EditLine *el, int c)
{

        if (el->el_search.patlen == 0)
                return (CC_ERROR);
        else
                return (cv_repeat_srch(el,
                    el->el_search.patdir == ED_SEARCH_PREV_HISTORY ?
                    ED_SEARCH_NEXT_HISTORY : ED_SEARCH_PREV_HISTORY));
}


/* vi_next_char():
 *      Vi move to the character specified next
 *      [f]
 */
protected el_action_t
/*ARGSUSED*/
vi_next_char(EditLine *el, int c)
{
        char ch;

        if (el_getc(el, &ch) != 1)
                return (ed_end_of_file(el, 0));

        el->el_search.chadir = CHAR_FWD;
        el->el_search.chacha = ch;

        return (cv_csearch_fwd(el, ch, el->el_state.argument, 0));

}


/* vi_prev_char():
 *      Vi move to the character specified previous
 *      [F]
 */
protected el_action_t
/*ARGSUSED*/
vi_prev_char(EditLine *el, int c)
{
        char ch;

        if (el_getc(el, &ch) != 1)
                return (ed_end_of_file(el, 0));

        el->el_search.chadir = CHAR_BACK;
        el->el_search.chacha = ch;

        return (cv_csearch_back(el, ch, el->el_state.argument, 0));
}


/* vi_to_next_char():
 *      Vi move up to the character specified next
 *      [t]
 */
protected el_action_t
/*ARGSUSED*/
vi_to_next_char(EditLine *el, int c)
{
        char ch;

        if (el_getc(el, &ch) != 1)
                return (ed_end_of_file(el, 0));

        return (cv_csearch_fwd(el, ch, el->el_state.argument, 1));

}


/* vi_to_prev_char():
 *      Vi move up to the character specified previous
 *      [T]
 */
protected el_action_t
/*ARGSUSED*/
vi_to_prev_char(EditLine *el, int c)
{
        char ch;

        if (el_getc(el, &ch) != 1)
                return (ed_end_of_file(el, 0));

        return (cv_csearch_back(el, ch, el->el_state.argument, 1));
}


/* vi_repeat_next_char():
 *      Vi repeat current character search in the same search direction
 *      [;]
 */
protected el_action_t
/*ARGSUSED*/
vi_repeat_next_char(EditLine *el, int c)
{

        if (el->el_search.chacha == 0)
                return (CC_ERROR);

        return (el->el_search.chadir == CHAR_FWD
            ? cv_csearch_fwd(el, el->el_search.chacha,
                el->el_state.argument, 0)
            : cv_csearch_back(el, el->el_search.chacha,
                el->el_state.argument, 0));
}


/* vi_repeat_prev_char():
 *      Vi repeat current character search in the opposite search direction
 *      [,]
 */
protected el_action_t
/*ARGSUSED*/
vi_repeat_prev_char(EditLine *el, int c)
{

        if (el->el_search.chacha == 0)
                return (CC_ERROR);

        return el->el_search.chadir == CHAR_BACK ?
            cv_csearch_fwd(el, el->el_search.chacha, el->el_state.argument, 0) :
            cv_csearch_back(el, el->el_search.chacha, el->el_state.argument, 0);
}
